采用有机先驱体浸渍法及无压烧结工艺,制备了Al2O3多孔陶瓷载体.利用溶胶-凝胶法在多孔陶瓷上负载Sm3+掺杂TiO2光催化材料.研究了煅烧温度、涂层次数等工艺因素对多孔陶瓷负载TiO2光催化降解甲基橙溶液的影响规律.结果表明,借助于多孔陶瓷高的气孔率,TiO2负载在Al2O3颗粒表面或进入颗粒间的孔隙内,使材料具有较大的比表面积.掺入Sm3使材料的光催化活性提高.在煅烧温度为600℃、四次涂层、甲基橙溶液pH值为2时,多孔陶瓷负载TiO2光催化降解甲基橙溶液效果最佳.
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